Consistency Relations for the Conformal Mechanism
High Energy Physics - Theory
2013-04-12 v2 Cosmology and Nongalactic Astrophysics
Abstract
We systematically derive the consistency relations associated to the non-linearly realized symmetries of theories with spontaneously broken conformal symmetry but with a linearly-realized de Sitter subalgebra. These identities relate (N+1)-point correlation functions with a soft external Goldstone to N-point functions. These relations have direct implications for the recently proposed conformal mechanism for generating density perturbations in the early universe. We study the observational consequences, in particular a novel one-loop contribution to the four-point function, relevant for the stochastic scale-dependent bias and CMB mu-distortion.
Cite
@article{arxiv.1212.3329,
title = {Consistency Relations for the Conformal Mechanism},
author = {Paolo Creminelli and Austin Joyce and Justin Khoury and Marko Simonović},
journal= {arXiv preprint arXiv:1212.3329},
year = {2013}
}
Comments
34 pages, 3 figures. v2: minor changes, version appearing in JCAP